Internal-combustion engine.



W. F. FREIDAG.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JULY9,1910.

1,013,'759, Patented Jan.2,1912.

UNITED STATES -ATENT Yb all whom it may concern: I A

Be it known that I, WILLIAM F. FREIDAG, citizen of the United States,residing at F reeport, in the county of Stephenson and State ofIllinois, have invented certain new and useful Improvements1nInternal-Combustion Englnes, of which the following is her in whichlie both cinnmunicates therewith by a specification, reference being hadtherein to the accompanying drawing.

The generalobject of this invention is to provide an improved internalcombustion engine "adapted to use heavy hydrocarbon 'uel, the specialdevices employed preferably being such that they mayreplace anal0 gousparts o f the-ordinar engine of similar type using gasolene or the, likelight hydrocarbon.

The novel features are found-in inder head and head being thecylattachments thereof, the providedwith an exhaust chama heavy oilpassage and an air and f el channel leading to the interior of thecylinder. v

In the accompanying drawings, Figure 1' is a plan view of the cylinderhead and certain attachments, other accessories not involved in theinvention not being shbwn. Fig. 2 is a side elevation of the samedevices. a certain small reservoir adjacent to the head being shown invertical section. Fig. 3 is a section on the line 3-3, Figf2, a secondsmall reservoir being shown in plan view. Fig. 4 is a section on theline 4-4, Fi 3.

In these views, A represents a hollow cylinder head provided with boltholes "B, B by which i t may be securedtothe ordinary cvlinder.

D leads from the margin of the head. Without the head is a small openreservoir E into which heavy oil from any suitable source is introducedby a pipe E and from which a small channel E in the body of the headleads inward ard again outward, its end opposite the reservoir beingclosed by a screw 'plug E or the'like, which permits opening the passagefor cleaning. This channel passes below the passage D and means of apassage F, controlled by a valve F a hand wheel F or the like. theliquid in the reservoir may be discharged uniformly into the passage D,whether or not the supply to the reservo'r is invariable,

In order that Specification of Letters Patent. Application filed Tillys, '1910.

fuel channel E Wlllll 'gasolene' by Ih the lower wall of the headis avalve C to which a fuel and air passage operated by FFICE.

STOVER ENGINE WORKS,

ILLINOIS.

INTERNAL-COMBUSTION ENGINE.

h Patented Jan. 2, 1912. Serial No. 571,246.

also provided with an exhaust valve Gwhich I admits the exhaust gasesfrom. the cylinder into a largechamber G whence they pass out through anopening G This chamber extends around both the passage D and the sothat, these receive the heat of the gases and transmit it to thematerial on its way to the admission valve. I also I novelty, forgasolene or light hydrocarbon liquid. This reservoir is provided on oneside with a large nipple or tubular projec provide a sccond reservoir I,without tion which is screwed'into the outer open end of the passage ormixing chamber D,

which as appears from F igs. 2 and 4 is chamber G: (F 4) and stillfarther above that portion of the passage E which'is closed by the plugE As Indicatedin' Figs. 1, 2, 3, air enters the chamber D through thestructure I and its nipple, and a valve .1 admits or cuts off gasoleneso that the entering air is otherwise. Such carbureting devices beingvery common and well known are not here shown in detail, the only thingHere im portant being-that air enters the chamber D freely and that itmay at will be supplied any ordinary device for such purpose. Owing tothe fact that the liquid in the constant-level open reservoir E of theexhaust and even if the liquid should be while in the passage, since thereservoir is tank. a

It is obvious that since the exhaust gases at every impulse sweep overthe conduit E and around the chamber D, and since the conduit liesbetween the exhaust chamber and the cylinder space from which the gasescome, the chamber D and the conduit are always highly heated when theengine is running. If the engine be started as a gasolene engine thevalve F being closed and the valve I being open, the oil in the conduitE is quickly heated, and if the valve I be then closed and the valve Fbe opened, the heavy oil is instantly substituted for the vaporized noharm could result a sort of expansion carbureted or i 'IS always alittle above the outle'tbf the I passage. E that passage is normallyfull;

. valvei controlling the delivery head of place of the gasolene, as themotor fuel; and obviously the reverse substitution may thereafter bemade at any time. I

Ordinarily the head is a single piece cored out to form the workingpassages and to avoidunnecessary weight, and it is a matter of.practical mo cut that it can replace the other constructions, when it isdesired to change from light to without great expense. In such case itonlynecessary to bolt 1; The combination with a cylinder head. providedwith an internal exhaust chamber,

with a mixing .chamber within-the exhaust chamber, and with a heavy oilconduit leadingffrom without .the head through the ex? the mixingchamber, a

end of h austl chamberfintoconduihmeans for supplying alr to themixthemixing 'chamb a heayy oil reservolr commumcatin'g with theiintake'end of said conduit and arrangedto lgee'p the latter filled, and handcontrolledi 'means for supplying light hydrocarbon liquid to said mixingchamber;

3, The combination with inderhead having an internal exhaust chamber, amixing chamber projecting into v the upperc'part of-the exhaust chamber,and

heavy fuel,"

the new head in the old one and suitably connectthetwc pipes of theconstant level reservoir.

' What I claim is:-

a conduit leading from without along the lower part of the exhaustchamber and into said mlxing chamber, of a reservoir secured to the headin position to' supply heavy oil to said conduit, :1. hand valvecontrolling the delivery of oil by said conduit, a gasolene reservoiralso carried by the head and arranged -for delivering its contents tosaid mixing chamber, and a hand operated valve controlling suchdelivery.

4. The combination with a cylinder head having internal exhaust chamberand a mixing chamber within the "the. head, a conduit leading from saidresersaid i and with an ex.-

a one-piece cyl voir through said exhaust chamber, at a lowerlevelthanthat of the liquid in said =reservoir, and opening mto themixingchambe'r, "a valve controlling the passage from said mixing and avalve for closing the discharge end of said conduit. I

5. The combination with a one-piece cylinder head havingv an internalexhaust chamber, a mixing chamber projecting into the upper part of theexhaust chamber and a conduit projecting intothe lower part of theexhaust chamber and leading chamber to the cylinder,

exhaust chamber, of a constant-level heavy oil reservoir fixedto fromthe I exterior of the head through, the bottom or I the mixing chamber,of-a valve controlling the-discharge endof the conduit, a heavy- 'oilreservoir fixed to the head and arranged 'to keep said conduitfilled,voir for-sup lying gasolene to said mixing chamber, an a hand valve forcontrolling the supplyof gasolene passing second reservoir.

In testimon whereof Iaflix'my signature iii-presence 0 two witnesses.

, v WILLIAM F, FREI AG. Witnesses:- v

H. H. An'r'mm,

W. '0, Prawns.

from the a second reser- Gopl'eazot this-batent-may be obtained forflvecents each, by addressing-the flommissioner of Patents, 1 v .1"waamnzton, 1X3 T

